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Backports of patch from systemd git to stable distributions
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Zbigniew Jędrzejewski-Szmek 7646f29a84 man: describe how cgroup controllers are turned on 
For a user, information which cgroup controllers are enabled based on
the unit configuration is rather important. Not only because it determines
what resource control is peformed by the kernel, but also because controllers
have a non-negligible cost, especially for deep nesting, and users may want
to *not* have controllers enabled.

Our documentation did its best to avoid the topic so far. This was partially
caused by the support for cgroup v1, which meant that any discussion of
controllers had to be conditional and messy. But v1 is deprecated on its way
out, so it should be fine to just describe what happens with v2.

The text is extended with a discussion of how controllers are enabled and
disabled, and an example, and for various settings that enable controllers
the relevant controller is now mentioned.

(cherry picked from commit 253d0d591b)
(cherry picked from commit da8c0e0978)
2023-03-30 19:00:55 +02:00
.clusterfuzzlite ci: unpin CFLite 2022-04-26 09:13:57 +00:00
.github doc: correct wrong use "'s" contractions 2023-03-30 18:59:55 +02:00
.semaphore semaphore: remove the Semaphore repositories recursively 2022-11-07 19:01:47 +00:00
catalog meson: Install all catalogs 2023-02-10 20:28:11 +00:00
coccinelle basic/list: drop LIST_IS_EMPTY 2022-07-02 12:46:16 +02:00
docs doc: correct wrong use "'s" contractions 2023-03-30 18:59:55 +02:00
factory meson: also allow setting GIT_VERSION via templates 2022-04-05 22:18:31 +02:00
hwdb.d hwdb: update 2023-02-16 00:46:43 +00:00
LICENSES network: change license of examples to MIT-0 2022-10-26 08:39:34 +02:00
man man: describe how cgroup controllers are turned on 2023-03-30 19:00:55 +02:00
mkosi.default.d mkosi: pull in libbpf1 instead of legacy libbpf0 on debian 2022-12-14 23:22:28 +00:00
modprobe.d meson: install the right README file in modprobe.d 2021-07-07 14:52:05 +02:00
network meson: Install missing network file 2023-02-10 20:28:11 +00:00
po po: Translated using Weblate (Chinese (Simplified) (zh_CN)) 2022-10-31 12:54:01 +01:00
presets units: enable systemd-network-generator by default 2021-12-16 09:49:39 +01:00
rules.d meson: Install missing udev rule 2023-02-10 20:28:11 +00:00
shell-completion meson: Install missing bash-completions 2023-02-10 20:28:11 +00:00
src doc: correct wrong use "'s" contractions 2023-03-30 18:59:55 +02:00
sysctl.d tree-wide: link to docs.kernel.org for kernel documentation 2022-07-04 19:56:53 +02:00
sysusers.d sysusers: also add root group 2023-02-16 18:10:56 +00:00
test test: add coverage for #26483 2023-03-30 18:56:36 +02:00
tmpfiles.d tmpfiles.d: drop misleading comment 2023-03-03 12:00:07 +01:00
tools Report version string as in the Boot Loader Spec, fix boot loader upgrades 2022-10-25 13:23:57 +02:00
units doc: correct wrong use "'s" contractions 2023-03-30 18:59:55 +02:00
xorg xorg/50-systemd-user: add a full license header 2021-10-01 14:45:00 +02:00
.clang-format clang-format: Adjust style of pointers 2022-05-30 04:00:54 +09:00
.ctags editors: Prevent ctags from following symlinks 2019-02-15 11:01:20 -08:00
.dir-locals.el scripts: use 4 space indentation 2019-04-12 08:30:31 +02:00
.editorconfig docs: configure editorconfig for css and html 2022-05-17 21:13:17 +02:00
.gitattributes gitattributes: introduce and use "generated" attribute 2021-10-18 09:42:55 +02:00
.gitignore core/cgroup: CPUWeight/CPUShares support idle input 2022-08-11 14:25:58 +02:00
.mailmap mailmap: two more names 2021-03-30 13:17:58 +02:00
.packit.yml packit: remove -Ddefault-user-timeout-sec/-Ddefault-timeout-sec 2023-02-10 20:28:11 +00:00
.vimrc scripts: use 4 space indentation 2019-04-12 08:30:31 +02:00
.ycm_extra_conf.py ycm: add doc string for all the functions in configuration file 2017-11-29 13:21:49 -07:00
configure tools: shellcheck-ify tool scripts 2021-09-30 12:27:06 +02:00
LICENSE.GPL2 relicense to LGPLv2.1 (with exceptions) 2012-04-12 00:24:39 +02:00
LICENSE.LGPL2.1 licence: remove references to old FSF address 2012-12-17 11:41:31 +01:00
Makefile tree-wide: add spdx header on all scripts and helpers 2021-01-28 09:55:35 +01:00
meson_options.txt core: allow disabling system time correction if rtc returns time far in the future 2022-08-24 21:39:46 +01:00
meson.build Include <threads.h> if possible to get thread_local definition 2023-03-30 18:59:18 +02:00
mkosi.build mkosi: Make sure bpf-framework works on CentOS Stream 8 as well 2022-10-17 08:45:48 +02:00
mkosi.postinst mkosi: Ensure we build all features/components in mkosi 2022-08-23 15:19:26 +02:00
NEWS doc: replace wrong á preposition by à 2023-03-30 18:59:30 +02:00
README docs: update unit name for sd-tmpfiles-setup 2023-03-30 18:44:58 +02:00
README.md README.md: add a missing line break 2022-10-19 11:17:33 +02:00
TODO doc: replace wrong á preposition by à 2023-03-30 18:59:30 +02:00

README.md

Systemd

System and Service Manager

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Details

Most documentation is available on systemd's web site.

Assorted, older, general information about systemd can be found in the systemd Wiki.

Information about build requirements is provided in the README file.

Consult our NEWS file for information about what's new in the most recent systemd versions.

Please see the Code Map for information about this repository's layout and content.

Please see the Hacking guide for information on how to hack on systemd and test your modifications.

Please see our Contribution Guidelines for more information about filing GitHub Issues and posting GitHub Pull Requests.

When preparing patches for systemd, please follow our Coding Style Guidelines.

If you are looking for support, please contact our mailing list or join our IRC channel.

Stable branches with backported patches are available in the stable repo.